| We have studied low-temperature properties of interacting electrons in a one-dimensional quantum wire (Luttinger liquid) hybridized with a single-level impurity. The hybridization induces a back-scattering of electrons in the wire which strongly affects its low energy properties. Using a one-loop renormalization group approach valid for a weak electron-electron interaction, we have calculated a transmission coefficient through the wire, and a local density of states, at low energies. In particular, we have found that the antiresonance has a generalized Breit-Wigner shape with the effective width which diverges at the Fermi level. |
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